Fredd, you must give the rp cash to to middle man. (The mod or admin) then the seller will buy vip as soon you got it the mod or admin must give the cash to the seller. If the staff member scams he will be banned himself or other punishments will be taken if the staff scams, that's the role of a middle man
Edit: I'll give you $2,500,000 (2,5m) RP Cash just to help you out and i know you'll get refunded but just so you won't be all poor if you get scammed again :C